Physics (5th Edition)
5th Edition
ISBN: 9780321976444
Author: James S. Walker
Publisher: PEARSON
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Chapter 20, Problem 55PCE
A parallel-plate capacitor is constructed with circular plates of radius 0.051 m. The plates are separated by 0.25 mm, and the space between the plates is filled with a dielectric with dielectric constant ĸ When the charge on the capacitor is 1.8 μC the potential difference between the plates is 1150 V. Find the value of ĸ.
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The drawing shows an edge-on view of two planar surfaces that intersect and are mutually perpendicular. Surface (1) has
an area of 1.90 m², while surface (2) has an area of 3.90 m². The electric field in the drawing is uniform and has a
magnitude of 215 N/C. Find the magnitude of the electric flux through surface (1 and 2 combined) if the angle 8 made
between the electric field with surface (2) is 30.0°.
Solve in Nm²/C
1
Ө
Surface 2
Surface 1
PROBLEM 5
What is the magnitude and direction of the resultant
force acting on the connection support shown here?
F₁ = 700 lbs
F2 = 250 lbs
70°
60°
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45°
F4 = 300 lbs
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Fs = 800 lbs
18°
Free Body Diagram
F₁ = 700 lbs
70°
250 lbs
60°
F3=
= 700 lbs
45°
F₁ = 300 lbs
40°
=
Fs 800 lbs
18°
PROBLEM 3
Cables A and B are Supporting a 185-lb wooden crate.
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185 lbs
Chapter 20 Solutions
Physics (5th Edition)
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